. >>> noted scientist stephen hawking is facing criticism from religious leaders for his latest books. in excerpts from his newest book printed thursday, hawking says god is not needed for the creation of the universe. he says the big bang was a result of the inevitable laws of science, that physics can explain things without the need for a benevolent creator. today the archbishop of canterbury says physics alone will not settle the question of why there is something rather than nothing. >>> in chicago it's something that young people can believe in. a group of performers is spreading a message of happiness through song. cynthia bowers reports. ♪ >> reporter: rap music often earns its bad rep, but this group is giving rap a whole new spin. ♪ you got the power to change >> reporter: meet chicago's happiness club. >> our message is, we're spreading happiness. we are spreading good vibes all over. ♪ >> reporter: its 50 performers come from different races and neighborhoods. they range in age from 6-year-old dawn butler -- are you a singer? a dancer? >> i'm a dancer. >> reporter: to